文献一覧: 河本康太郎 (著者)

1 0 0 0 OA 夜間照明が生物生態系に及ぼす影響新聞事例等から-シンポジウム「植物成育と光環境制および評価技術」

著者: 河本康太郎
出版者: 一般社団法人照明学会
雑誌: 照明学会誌 (ISSN:00192341)
巻号頁・発行日: vol.77, no.Appendix, pp.193-194, 1993 (Released:2011-07-19)
参考文献数: 5

2023-03-02 23:38:24
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1 0 0 0 OA 白色LED ランプの美術・博物館用照明としての適性 ―天然染料染色布の変退色―

著者: 齊藤昌子中村弥生森山厳與河本康太郎
出版者: 一般社団法人照明学会
雑誌: 照明学会誌 (ISSN:00192341)
巻号頁・発行日: vol.98, no.11, pp.585-592, 2014-11-01 (Released:2015-02-02)
参考文献数: 9
被引用文献数: 1

To evaluate the performance of white LEDs as museum lighting, the authors have conducted research and reported on the effect of illuminance level and color temperature on textiles dyed with natural dyes. In this research, four additional white LEDs with various correlated color temperatures and different material constructions and three types of conventional fluorescent lamp were tested yellow textiles that were sensitive to light and ranked in the highly responsive category of the CIE Technical Report (CIE-157-2004) for blue and red dyes. The color degradation degree caused by white LEDs was almost larger than that caused by conventional NU fluorescent lamp. Among the white LEDs, the degradation degree was LED/D (7483K) > LED/UV+RGB (5265K) > LED/B+YAG (5098K) > LED/L (3633K). For the same illuminance level when the content of the 400-500 nm radiation became larger, the degradation degree became larger. When the correlated color temperature was the same, the degradation degree was larger with LED/UV+RGB than with LED/B+YAG. The acceleration degree of degradation differed depending on the LED construction (combination of LED chip and fluorescent material) . From these results, it can be determined that for introducing white LEDs to museum lighting, not only the annual maximum exposure but also the material construction (combination of LED chip and phosphor) should be considered.